A furious David Cameron is planning revenge on Boris Johnson after the London mayor launched a series of attacks on the prime minister’s “fudge-arama” over the future of Heathrow airport...

"We will see what happens the next time he comes around with the begging bowl,” said one Downing Street official."

Not that well then:

"Mr Cameron could withhold government support for projects Mr Johnson regards as vital to the capital, unless the mayor tones down his attacks on the government. These include a new rail line from Chelsea to Hackney dubbed Crossrail II, and a tunnel under the Thames at Silvertown."

That would be same tunnel that Boris announced as a done deal just before the election. What else could be held back?

"The mayor also pledged in his election campaign this year to press the government to give responsibility for rail franchises to City Hall and in July established a commission to investigate whether London could retain more of the money it hands to the Treasury in tax."